dry slag granulation

  • Cutting-Edge By-Product Recycling | Primetals Technologies

    Dry slag granulation with heat recovery. Primetals Technologies, voestalpine Stahl, the FEhS – Building Materials Institute and the University of Leoben joined forces in an R&D program to develop a new dry-granulation technology using air to cool molten slag and recover the lost heat energy.

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  • Dry Granulation to Provide a Sustainable Option for Slag ...

    Dry slag granulation is destined to replace conventional water granulation of molten slags in the not too distant future, creating a paradigm shift in the history of slag treatment. In this dry process, molten slag is atomised under centrifugal forces on a spinning disc and the slag droplets generated are quenched and solidified quickly using air.

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  • Forging a future in green steelmaking - CSIRO

    Mar 16, 2015· The signing of the agreement, to demonstrate CSIRO's Dry Slag Granulation (DSG) technology at industrial scale, is a landmark for Australia-China research collaboration and for environmentally friendly metal production, according to CSIRO Director of the Mineral Resources Flagship, Jonathan Law.

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  • Dry Slag Granulation: A Path to Improving the Safety and ...

    The energy in slag is lost through dumping and water granulation processes, and where slag is sold as a by-product, it is for its chemical content only. Here, dry granulation processes also offer advantages including the production of by-products which hold value in both their chemical content and physical properties and heat recovery.

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  • Dry Granulation of Blast Furnace Slag - steel-360.com

    Dry granulation of liquid BF slag is being developed in many countries along with heat recovery process. The dry granulation process of liquid slagis described below. Dry slag granulation process is essentially to atomize the liquid slag and then to cool the particles rapidly so as to produce a glassy slag.

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  • Reactivity and performance of dry granulation blast ...

    Dry granulation, as a new process for molten blast furnace slag treatment, is an attractive alternative to water quenching. In this study, the performance of dry granulation slag in slag …

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  • dry granulation copper slag - benitomedia.co.za

    Dry slag granulation: a sustainable process for full value recovery ... A novel dry method for slag granulation could help the cement, iron and steel industries develop sustainable practices and derive value from waste. Get Price. Improvement in Soil properties of Expansive Soil by using Copper ...

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  • DRY SLAG GRANULATION SYSTEM AND METHOD - Primetals ...

    Aug 03, 2016· 1. A dry slag granulation system comprising a rotary atomising granulator (6) and a tundish (3); wherein the granulator comprises a cup or disk (5); wherein the tundish comprises a delivery outlet (4), an overflow outlet (7) and a set of moveable mounts (8a, 8b); and wherein the device further comprises at least one of a tundish weight sensor, a granulator drive motor power sensor (13), a ...

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  • (PDF) 'Dry' Granulation of Slags for Producing Cement Binder

    'Dry' granulation (atomisation) is emerging as an alternative technology, the resulting solid product does not require drying, and possibilities exist for recovering heat energy from the hot slag.

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  • CFD modelling of dry slag granulation using a novel ...

    CSIRO's dry slag granulation process. The 2D CFD model can be used to give timely predictions that allow one to explore and select appropriate design and operating conditions for producing a slag film that will ultimately break up into droplets of desired size; and the

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  • (642e) Dry Granulation of Blast Furnace Slag for Heat ...

    Nov 07, 2013· Using dry slag granulation at integrated steel and iron mills will gain access to the sensible heat of the blast furnace slag. The recovered energy can be used for the production of steam or electricity or for other useful preheating processes. An energy …

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  • Granulation - Wikipedia

    Dry granulation. The dry granulation process is used to form granules without a liquid solution because the product granulated may be sensitive to moisture and heat. Forming granules without moisture requires compacting and densifying the powders. In this process the primary powder particles are aggregated under high pressure.

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  • Hatch Steelmaking Technologies | Dry Slag Granulation ...

    Dry Slag Granulation. Steelmaking slags are typically dumped to ground and used as low-value road aggregate. Hatch's dry slag granulation process uses air to directly granulate slag. The dry slag granulation advantages include improved safety, reduced noise and pollution and ability to access higher value-added slag markets. ...

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  • DRY SOLIDIFICATION WITH HEAT RECOVERY OF

    a granulation process that produces cool, dry blast furnace slag without impairing its hydraulic properties _.5 Attempts have also been made to atomise the blast furnace slag in order to save on grinding energy, which makes up approx. 45% of the primary energy input for ground granulated blast furnace slag production. Moreover, there

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  • 'Dry' Granulation of Slags for Producing Cement Binder ...

    Rapid quenching of molten slag is required to produce 'hydraulically-active' binder when reacting with OPC; but water quenching can also require between five to ten tons of water per ton of slag at the plant. 'Dry' granulation (atomisation) is emerging as an alternative technology, the resulting solid product does not require drying ...

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  • AISTech2018 Dry Slag Granulation – The Future Way to ...

    Dry slag granulation is based on molten slag atomization using a variable speed rotating cup or dish (see Fig. 1). The slag is fed from the slag runner via a vertical refractory lined pipe directly onto the center of the rotating cup.

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  • Some Fundamental Aspects of Dry Slag Granulation Process

    Some Fundamental Aspects of the Dry Slag GranulationProcess . Sharif Jahanshahi*, Yuhua Pan and Dongsheng Xie . CSIRO Minerals Down Under National Research Flagship, Clayton, Victoria, 3168, Australia . Abstract: There is a growing interest in development of a dry slag granulation (DSG) process so as to recover the

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  • CSIRO Research Publications Repository - Dry slag ...

    Dry slag granulation could make a fundamental change in slag treatment. In this new approach, molten slag is atomized under centrifugal forces on a spinning disc, and the droplets generated are quenched and solidified quickly using air, with simultaneous heat recovery.

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  • Preface for Thematic Section: Slag Granulation | SpringerLink

    May 31, 2019· As such, it is highly desirable that an alternative slag process could be developed to replace water granulation to meet the current and future needs of the steel industry. The concept of dry granulation and heat recovery was proposed in the 1970s.

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  • Dry Granulation of Blast Furnace Slag for Energy Recovery ...

    Aug 09, 2014· Without the need of an upstream drying system for the blast furnace slag energy and as in consequence CO2 can be saved. In summary dry granulation of blast furnace slag allows an environmental friendly and sustainable subsequent processing for one of the big heat recovery potentials at a modern blast furnace.

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  • Valorisation Symposium

    Proceedings of the Fourth International Slag Valorisation Symposium Zero Waste 15-17 April 2015 Leuven, Belgium Editors Annelies Malfliet and Yiannis Pontikes

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  • chinese technology for blast furnace slag granulation process

    Paper - Slag Valorisation Symposium. In this paper, the dry granulation process flow and semi- industrial ... valorisation are 21% for steel slags and 76% for blast furnace slags.

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  • Granulation characteristics of molten blast furnace slag ...

    Jan 01, 2018· With this technology, dry slag granulation acts as a prerequisite and key role towards realizing the ultimate heat recovery rate and slag quality. To this end, several techniques including rotary drum, air blast, and centrifugal granulation have been developed .

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  • (ET)Dry Granulation of Molten Blast Furnace Slag and ...

    The sensible heat of slag particles was converted to chemical heat through the pyrolysis reaction. Experimental Part 1: Dry granulation of molten BFS Materials The BF slag used was from Chongqing Iron and Steel Co. China in this experiment. The main chemical compositions of the slag are shown in …

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  • The SLAG-REC project for an innovative direct dry ...

    certain level of free lime content of slag or take under strait control all the characteristics of the slag. ASO has recently developed a new, eco-innovative system for slag collection by means of a dry granulation treatment, which can simplify the handling of the slag out of the EAF and keep

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  • Abstract: Dry Granulation of Blast Furnace Slag for Heat ...

    In summary dry granulation of blast furnace slag allows an environmental friendly and sustainable subsequent processing for one of the last big heat recovery potentials at a modern blast furnace. [1] References [1] McDonald, I., Long, E., Werner, A. & Most, D. (2010) Dry slag granulation - The environmental friendly way to making cement.

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  • Granulation of titania slag - SAIMM

    Dry granulation of titania slag Description and operation of the dry granulation plant Dry granulation of titania slag was carried out at the 500 kW DC furnace on site. In this instance compressed air was used as granulation medium. Two rectangular guide plates placed on the slag taphole side of the furnace channelled

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  • TPT: Dry Granulation of Blast Furnace Slag for Heat Recovery

    Dry Granulation of Blast Furnace Slag for Heat Recovery. Blast furnace slag is known as a by-product from the production of hot metal at integrated steel and iron mills. Approximately 300 kg of this liquid slag with a temperature of about 1500°C is tapped together with each ton hot metal. This results in a worldwide annual production of about ...

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  • Design and Operation of Dry Slag Granulation Pilot Plant ...

    Abstract. CSIRO has been working on a dry granulation process, integrated with heat recovery, since 2002. It involves a rotary disc that atomizes molten slag to produce liquid droplets, which are rapidly quenched to become solid granules.

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  • Dry slag granulation: producing valuable by-products from ...

    Jan 02, 2019· By converting low value slow cooled blast furnace slag into a high value material for the cement/construction industry, this process turns a waste product into wealth. We are currently negotiating with international engineering companies to commercialise the dry slag granulation technology.

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